Table 18.0. Total above-ground biomass (million tonnes) on forest land by species group and age class in Canada.
Species group Age (years) Total
1-20 21-40 41-60 61-80 81-100 101-120 121-140 141-160 161-180 181-200 201+ Other1
Unspecified hardwoods 42.65 22.02 14.10 2.73 6.71 0.28 0.11 - - - - <0.01 88.59
Unclassified 4.04 3.56 0.14 0.25 0.13 0.14 0.07 0.10 0.03 - - 92.15 100.61
Other hardwoods 1.73 13.58 46.52 53.89 37.28 13.11 2.65 1.07 0.09 1.13 4.16 0.03 175.24
Unspecified conifers 70.59 82.16 18.72 4.60 0.93 - - - - - - 0.03 177.01
Larch 9.71 22.76 58.20 78.09 81.70 64.95 42.35 20.79 5.93 2.56 13.42 0.11 400.57
Cedar & other conifers 2.50 13.16 36.78 34.20 42.08 33.58 16.57 15.29 14.63 21.75 627.85 - 858.40
Birch 24.63 129.44 254.72 291.78 274.16 87.44 23.01 9.03 0.56 0.74 1.14 0.02 1 096.68
Maple 10.53 45.64 279.52 360.93 350.58 83.44 12.68 4.62 3.42 - 0.47 <0.01 1 151.84
Douglas-fir 2.71 21.60 82.15 114.02 146.11 184.34 193.16 145.70 50.58 42.77 212.20 - 1 195.34
Hemlock 6.39 44.65 89.71 85.68 90.89 46.41 50.78 29.97 40.36 24.07 1 236.60 - 1 745.50
Fir 25.69 182.31 301.34 276.30 310.30 157.00 164.70 156.69 144.10 106.34 747.17 0.03 2 571.97
Pine 80.99 337.73 347.01 561.42 595.50 490.40 423.40 240.26 102.07 44.91 107.95 0.03 3 331.67
Poplar 105.76 316.67 554.30 1 135.35 1 009.94 471.48 225.90 83.42 10.97 10.43 12.03 0.01 3 936.23
Spruce 57.51 423.05 1 050.96 1 783.24 2 051.99 3 537.32 2 522.34 1 217.00 302.34 118.63 630.65 0.50 13 695.53
Subtotal 445.43 1 658.32 3 134.16 4 782.49 4 998.28 5 169.90 3 677.72 1 923.93 675.08 373.34 3 593.63 92.92 30 525.20
Source: Canada's National Forest Inventory, combined remeasured (2007-2017) and projected (2006-2017 with NFI projection system) data< (Version 3, November 2023) (http://nfi.nfis.org)
Note: The Arctic ecozones (Arctic Cordillera, Northern Arctic, Southern Arctic), and the Taiga Plains and Hudson Plains ecozones located in Nunavut, are not inventoried. These non-inventoried areas total 262,189.89 thousand ha.
1 Missing or unknown age class.